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j UNITED STATES PATENT OFFICE.

ROBERT A. MGOULLOUGH, OF MILWAUKEE, WISCONSIN.

SOAP.

SPECIFICATION forming part of Letters Patent No. 243,936, dated July 5,1881,

Application filed April 27, 1881.

To all whom it may concern:

Be it known that I, ROBERT A. MoOUL- LOUGH, of Milwaukee, in the countyof Milwaukee, and in the State of Wisconsin, have invented certain newand useful Improvements in Soap; and I do hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention consists in a new and improved composition for soap,together with a new process for compounding the several ingredientsthereof and thoroughly incorporating the whole into one mass, all asmore fully set forth hereinafter.

To prepare, say, three hundred pounds of my improved soap, I first takeabout sixty pounds of olive-oil stearine, forty pounds of peanut-oil,and one hundred pounds of lard, and sufficient caustic soda, either dryor in solution, to saponify the mass. If I employ the soda in a solidstate, I require about forty pounds; but if it is in a liquid state, of32 Baum, about one hundred and twenty pounds of the solution isnecessary. The whole is then boiled together in the usual way untilsaponification ensues, making what is known as a curd soap. I nextprepare in another vessel a second mixture, as follows: I take aboutthirty pounds of the crystals of soda (crude carbonate of soda) and addabout twelve pounds of common salt, stirring the mixture into ahomogeneous mass. I next boil the above into a dry granulated state, andto this result 1 add about two gallons of water, and into this lastsolution, reduced to a temperature of about 150 Fahrenheit by theaddition of water, I add the first mixture or curd soap, prepared asabove described, and draw the fire from under the kettle. Then into theresulting mass I stir about eight pounds of powdered slippery-elmbark(Ulmusfulva,) and the soap is now completed, with the exception of thecolor, the mass being now at the temperature of 125 Fahrenheit, orthereabout.

For the above amount (three hundred pounds) of soap, to properly colorthe same I make a solution by dissolving eight ounces of sulphuret ofpotassium in cold water and mix in ten pounds of Venetian red. I thenmake a second solution by dissolving two pounds of sulphate of iron inwarm water, and pour this solution into the cold solution justdescribed,

(No specimens.)

which produces a solution of a blue color. I then pour thiscoloring-solution into the mass of soap, and thoroughly incorporate thesoap and coloring-matter together by hand or in a crutching-machine, asis most convenient. When the whole is cold it is to be cut into bars forlaundry use or pressed into cakes and finished for toilet purposes inthe usual manner.

The addition of the slippery-elm bark Ulmus fulva) modifies the natureof the whole soap and adds to it the desirable medicinal and healingproperties, besides rendering it a better article for ordinary laundryuse.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a soap compound, the mixture of oleaginous and alkaline materialwith the pewdered bark of the Ulmus fuloa, as set forth.

2. In a soap compound, the mixture of a cold solution of sulphuret ofpotassium with Venetian red and with a warm solution of sulphate ofiron, substantially as described, to color and finish the said compound.

3. A soap compound consisting of olive-oil stearine, peanut-oil,lard,caustic soda, crystals of soda, common salt, and slippery-elm bark, asset forth.

4. The improved soap formed by the mixture of olive-oil stearine,peanut-oil, lard, caustic soda, crystals of soda, common salt,slippery-elm bark, sulphuret of potassium, Venetian red, sulphate ofiron, and water, substantially as described.

5. In the manufacture of soap, the process described, consisting in,first, forming a mixture of olive-oil stearine, peanut-oil, and lard,saponifying this by the addition of caustic soda, either in a solid orliquid state, and boiling the whole to form a curd soap; secondly,preparing a mixture of crystals of soda and common salt, boiling thesame to a granulated state, and adding water thereto, and then addingthe two mixtures together; and, thirdly, stirring into the resultingmass powdered slippery-elm bark, as described.

6. The process of manufacturing soap, consistin g in, first, preparing acurd soap by mixing together olive-oil stearine, peanut-oil, and lard,saponifying this mixture by the addition of solid or liquid causticsoda, the whole being boiled together 5 secondly, preparing a solutionby mixing together crystals of soda and common salt, boiling the same toa dry granulated state, and adding water thereto; thirdly, adding thetwo mixtures together in a heated state and drawing the fire from underthis mixture fourthly, stirring into the resulting mass powderedslippery-elm bark; fifthly, making a cold solution of sulphuret ofpotassium and adding Venetian red thereto; sixthly, making a separatesolution of sulphate of iron in warm Water and adding it to the coldsolution; and, finally,

adding this mixture to the soap solution, and incorporating the wholetogether by thoroughly mixing or crutching the same, substantially asdescribed.

In testimony that I claim the foregoing I have hereunto set my hand this20th day of April, 1881.

ROBERT A. MGOULLOUGH.

Witnesses S. S. STOUT, HAROLD G. UNDERWOOD.

